seven dust?

Hi all has anyone ever heard of using "seven dust' mixed in with play sand for the chickens to take their 'dust bath'in? It's supposed to help with parasites. But I'm a little worried it may be bad for them.

Yes, I've heard of that. I have not done it. My mother used to dust her chickens with Sevin all the time and it never seemed to hurt her chickens. So putting a little in their bath dirt may not be a bad idea. I put it under the bedding in their nests.